Product Introduction

This innovative upgraded product is developed based on long-term research on cable fault testing. It adopts a large-color LCD to display the actual high-voltage value at the high potential side, equipped with overvoltage and overcurrent protection.
Complying with China power industry standard General Technical Conditions for High Voltage Test Equipment, it mainly serves as an impulse discharge power supply for medium and low voltage cable fault location. It can also conduct DC withstand voltage tests for cables, capacitors, motors and porcelain insulators, acting as an upgraded alternative to power frequency high voltage sources.

Application Scope

HF-HG-303 Integrated High Voltage Pulse Generator applies to cable fault testing for 35kV and below cables. It is a high-voltage signal generator for locating high-resistance faults, earth faults and complicated hidden faults in power cables.
Widely used for rough and precise fault pinpointing on power cables, street lighting cables, railway signal cables and communication cables, covering high-resistance faults, flashover faults and low-resistance earth faults.

Functional Features

Compact structure with software control, supporting automatic voltage rise and voltage stabilization.
Intelligent operation, real-time dynamic high voltage display and automatic indication of discharge at fault points.
Automatic system judgment with overcurrent protection and timely text prompts on LCD screen.
Industrial color LCD with friendly human-machine interface and intuitive data display.
Stable performance. The enclosure uses engineering plastic insulation material, safe operation, compact size, light weight and simple wiring.
Special combined grounding design to avoid abnormal operation caused by improper wiring and ensure stable performance.
Built-in capacitor for simpler wiring.

Technical Parameters

Item	Specification
Output Voltage	Negative DC 0 ~ 35kV, continuously adjustable
Built-in Capacitor	2μF/35kV (Standard Configuration)
Pulse Energy	≥1024J
Discharge Cycle	Minimum 3s
Display Error	≤±2%
Display	5.6-inch industrial color LCD screen
Additional Functions	Emergency operation mode, stable performance
Power Supply	AC220V, 50Hz; supports external mobile power supply
Operating Temperature	-10℃ ~ 50℃
Relative Humidity	≤90%
Output Power	≤1.5kVA
Dimensions & Weight	L360mm × W265mm × H290mm, weight ≤23kg

Key Features (Two-column layout for website)

Features	Description
Negative DC 0~35kV continuous output	Dedicated for cable flashover fault testing
High pulse energy ≥1024J	Effectively break down high-resistance cable faults
Automatic boost & voltage stabilization	Intelligent operation with fault discharge indication
Comprehensive protection	Overcurrent protection with real-time LCD alarm prompt
Insulated engineering plastic casing	Safe, lightweight and convenient for field testing
Built-in standard capacitor	Simplify on-site wiring work
Support external mobile power supply	Suitable for outdoor field emergency testing

FAQ — Integrated High Voltage Pulse Generator

Q1: What is this High Voltage Pulse Generator mainly used for?

A: It acts as impulse discharge power source for locating medium & low voltage cable faults. It can also carry out DC withstand voltage tests on cables, capacitors, motors and insulators.

Q2: What types of cables and faults can it test?

A: Suitable for cables rated 35kV and below, including power cables, street light cables, railway signal cables and communication cables. It handles high-resistance faults, flashover faults and low-resistance earth faults.

Q3: What is the output voltage range?

A: Negative DC voltage 0 ~ 35kV, continuously adjustable.

Q4: How much pulse energy can it deliver?

A: Pulse energy ≥1024J, enough to break down high-resistance cable faults.

Q5: What is the minimum discharge interval?

A: Minimum discharge cycle is 3 seconds.

Q6: What is the built-in standard capacitor?

A: 2μF / 35kV equipped as standard.

Q7: Does the device support automatic voltage regulation?

A: Yes. It adopts software control with automatic voltage rise and stabilization functions.

Q8: How to judge discharge at the fault point?

A: Real-time dynamic high voltage display on screen, with automatic indication when discharge occurs at cable fault position.

Q9: Is there any protection against abnormal operation?

A: Built-in automatic overcurrent protection. The LCD will pop up text reminders once abnormality is detected.

Q10: What display configuration is adopted?

A: 5.6-inch industrial color LCD screen, display error ≤±2%, intuitive data viewing.

Q11: Why use engineering plastic enclosure?

A: Good insulation performance, safe operation, small size and light weight for field mobile work.

Q12: What is special about the grounding design?

A: Specially designed combined grounding terminal, effectively avoiding unstable operation caused by incorrect wiring.

Q13: What power supply can be used?

A: Standard AC220V 50Hz. It also supports external mobile power supply for outdoor field tests.

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